Home / 148,977.20-205,588.52-81,909.20

Finding the Fourth Proportional to 148,977.20, 205,588.52 and 81,909.20

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Solution

The fourth proportional to 148,977.20, 205,588.52 and 81,909.20 is: 113,034.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,977.20 : 205,588.52 = 81,909.20 : x
  2. Step 2: Convert to fraction form
    148,977.20/205,588.52 = 81,909.20/x
  3. Step 3: Cross multiply
    148,977.20x = 205,588.52 × 81,909.20
  4. Step 4: Simplify right side
    148,977.20x = 16,839,589,764.90
  5. Step 5: Solve for x
    x = 16,839,589,764.90/148,977.20
  6. Step 6: Final answer
    x = 113,034.68

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.